What are the three categories that compose the chemical industry? Which one is the largest category?
What will be an ideal response?
The three categories are commodity (being the largest), fine/specialty,
and energy and fuel.
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Currents of a three-phase system are ____ degrees out of phase with each other.
A. 60 B. 90 C. 120 D. 180
Flooded starts might be traced back to a(n) _____.
a. undersized expansion device b. failed crankcase heater c. poorly calibrated room thermostat d. excess moisture in the refrigerant
(Circle one) (NIOSH, OSHA) considers a gas to have adequate warning properties when its odor, taste or irritant effects are detectable and persist at concentrations below the recommended exposure level.
What will be an ideal response?
Two voltages (
and 
) are applied to a resister. 
is 40 volts at 
reference.
src="https://sciemce.com/media/4/ppg__examview__ch9__00001_res__nr010-5.jpg" border="0"> is 60 volts and leads 
by 
. Find 
to the nearer tenth.
Fill in the blank(s) with the appropriate word(s).